A punch and screw riveting combined punch device

Abstract

The application discloses a stamping and screw riveting combined stamping device, which comprises a punch main body, a screw feeding machine and a cooperative control system, the punch main body comprises a machine body, a workbench, a lower die, a mounting seat capable of moving up and down, an upper die, a driving mechanism and a stamping control system; the upper die is integrated with a forming part, a first riveting part and a second riveting part; the screw feeding machine comprises a feeder, a locking tool, a hose and a screw feeding control system; the feeder feeds the screws one by one to the locking tool arranged in the accommodating cavity of the first riveting part of the upper die. The cooperative control system communicates with the stamping and screw feeding control systems, coordinates the time sequence of stamping forming and screw feeding and riveting, realizes the synchronous completion of stamping forming and twice screw riveting of a part in one machining cycle, and solves the problem of low efficiency caused by the separation of stamping and riveting in the traditional process through process integration, thereby saving manual transfer, twice positioning and special riveting equipment, significantly shortening the machining cycle and improving the production efficiency.

Description

Technical Field

[0001] This application relates to the field of metal stamping equipment technology, and more specifically, it relates to a combined stamping and screw riveting stamping device. Background Technology

[0002] In fields such as electronic hardware and automotive parts, many stamped parts require screw crimping after processing for subsequent assembly. For example, CPU heatsink brackets need screws pressed into stamped holes to secure the heatsink module; server backplates require high-precision studs to be riveted at multiple locations; and appliance housing mounting feet require both stamping and threaded fastening.

[0003] In related technologies, parts need to be manually sorted and collected after stamping, and then transported to a dedicated riveting station for repositioning before riveting. Using the above technology consumes a lot of time in the intermediate transportation and positioning stages, resulting in low overall production efficiency. Utility Model Content

[0004] In order to solve the problem of low efficiency caused by the separate processing of part stamping and screw crimping in related technologies, this application provides a combined stamping and screw riveting stamping device.

[0005] A combined stamping and screw riveting stamping device, comprising:

[0006] The punch press body includes a machine body, a worktable fixed to the lower part of the machine body, a lower die set on the worktable, a mounting base set on the upper part of the machine body and reciprocating up and down relative to the worktable, an upper die fixed to the bottom of the mounting base, a drive mechanism for driving the movement of the mounting base, and a punching control system for controlling the punching action. The upper die is sequentially provided with a forming part for forming the part, a first riveting part for initially riveting the screw, and a second riveting part for riveting the screw a second time.

[0007] A screw feeding machine includes a feeder fixed to the machine body, a locking tool disposed on the upper die, a hose connecting the output end of the feeder and the input end of the locking tool, and a screw feeding control system for controlling screw feeding and loading / unloading. The feeder is used to output the randomly piled screws one by one, and the locking tool is used to lock the screw head or unlock the screw. The upper die has a receiving cavity for accommodating the locking tool and a through hole for the hose to pass through the receiving cavity in the first riveting part.

[0008] The collaborative control system is connected to both the stamping control system and the screw feeding control system. The collaborative control system coordinates and controls the timing of the stamping action, screw feeding, and riveting action.

[0009] Preferably, the drive mechanism includes a motor, a drive shaft, a crankshaft, a connecting rod, a first belt, and a second belt. The drive shaft and the crankshaft are both horizontally arranged on the top of the machine body, and the drive shaft is parallel to the crankshaft. The connecting rod is vertically arranged, and the top end of the connecting rod is hinged to the crankshaft. The bottom end of the connecting rod is fixedly connected to the mounting base. A first flywheel is provided on the crankshaft, and a second flywheel and a first pulley are provided on the drive shaft. The motor is fixed to the top of the machine body, and a second pulley is provided on the drive shaft of the motor. The first pulley and the first flywheel are connected by a first belt, and the second pulley and the second flywheel are connected by a second belt.

[0010] Preferably, dampers are vertically fixed on both sides of the crankshaft at the top of the fuselage, and both dampers are connected to the mounting base.

[0011] Preferably, the upper mold is provided with a punch in the forming part.

[0012] Preferably, the upper die is provided with a punch at the second riveting part, and a pressure sensor is provided between the punch and the upper die, the pressure sensor being communicatively connected to the stamping control system.

[0013] Preferably, the lower die is provided with a raw material support assembly, which is used to support the stamping raw material to slide sequentially through the forming part, the first riveting part, and the second riveting part of the upper die.

[0014] Preferably, the raw material support assembly includes a plurality of first support columns and a plurality of second support columns of the same number. Each first support column corresponds to a second support column to form a symmetrical structure. The first support columns and the second support columns are arranged along the width direction of the lower mold, and the plurality of first support columns and the plurality of second support columns are evenly arranged along the length of the upper mold. The upper mold is provided with a clearance groove at the position of each of the first support columns and the plurality of second support columns to avoid the first support columns and the second support columns. The opposing surfaces of the first support columns and the second support columns are all recessed with clamping grooves. The clamping grooves provided on the first support columns and the second support columns are all provided through the lower mold along the length direction of the lower mold. The forming part, the first riveting part, and the second riveting part provided on the upper mold are all located between the first support columns and the second support columns.

[0015] Preferably, the upper mold is provided with vertical guide posts at all four corners, and the lower mold is provided with guide holes at all four corners that match the size of the guide posts, with one guide post inserted into each guide hole.

[0016] The beneficial technical effects of this application are as follows: It integrates the two originally separate processes of stamping and screw riveting into one machine and completes them in one go, saving the time and labor costs of manual sorting, transportation and repositioning at the riveting station, greatly shortening the overall processing cycle of a single part, making the overall production efficiency of the part high, reducing the need for special riveting equipment, saving factory space and equipment investment costs, and reducing manual operation by automatically stamping and riveting screws, thus ensuring the safety of employees. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a stamping and screw riveting composite stamping device according to this embodiment.

[0018] Figure 2 This is a schematic diagram of the connection structure between the upper mold and the screw feeder in this embodiment.

[0019] Figure 3 This is a schematic diagram of the lower mold in this embodiment.

[0020] Figure 4 This is a schematic diagram of the connection structure between the drive mechanism and the mounting base in this embodiment.

[0021] Reference numerals: 1. Punch press body; 2. Screw feeder; 3. Machine body; 4. Worktable; 5. Lower die; 6. Mounting base; 7. Upper die; 8. Drive mechanism; 9. Forming part; 10. First riveting part; 11. Second riveting part; 12. Feeder; 13. Locking tool; 14. Hoses; 15. Receiving cavity; 16. Through hole; 17. Punch; 18. Slot; 19. Mounting slot; 20. Punch rod; 21. First support column; 22. Second support column; 23. Clearance slot; 24. Clamping slot; 25. Guide column; 26. Guide hole; 27. Slide rail; 28. Slider; 29. ​​Motor; 30. Drive shaft; 31. Crankshaft; 32. Connecting rod; 33. First flywheel; 34. Second flywheel; 35. First pulley; 36. Second pulley; 37. Damper. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Reference Figure 1 and Figure 2A combined stamping and screw riveting stamping device includes a stamping body 1, a screw feeder 2, and a collaborative control system. The stamping body 1 includes a machine body 3, a worktable 4, a lower die 5, a mounting base 6, an upper die 7, a drive mechanism 8, and a stamping control system. The worktable 4 is located at the lower part of the machine body 3, the lower die 5 is located at the top of the worktable 4, and the mounting base 6 is movably located at the upper part of the machine body 3 to achieve reciprocating up and down relative to the worktable 4. The upper die 7 is fixed to the bottom of the mounting base 6, and the upper die 7 is aligned with the lower die 5. The upper die 7 is sequentially provided with a forming part 9 for forming parts, a first riveting part 10 for initially riveting screws, and a second riveting part 11 for second riveting screws. The drive mechanism 8 is communicatively connected to the stamping control system, and the stamping action is controlled by the stamping control system.

[0024] Reference Figure 1 and Figure 2The screw feeding machine 2 includes a feeder 12, a fastening tool 13, a hose 14, and a screw feeding control system. The feeder 12 is fixed on the workbench 4. The fastening tool 13 is set on the upper mold 7. Specifically, the upper mold 7 and the first riveting part 10 are provided with a receiving cavity 15, which extends through the bottom of the upper mold 7. The fastening tool 13 is fixed in the receiving cavity 15. The upper mold 7 is also provided with a through hole 16 communicating with the receiving cavity 15. One end of the hose 14 passes through the through hole 16 and is connected to the input end of the fastening tool 13. The other end is connected to the output end of the feeder 12. The feeder 12 is used to output the scattered screws one by one. Its structure integrates a vibratory plate, a linear vibrating track, and an air punch. Its principle is to use the vibratory plate to organize the scattered screws so that the screws are neatly arranged in the linear vibrating track, and then the screws are conveyed to the hose 14 through the linear vibrating track. Finally, the air punch, in cooperation with an external air supply device, sends the screws into the hose 14 through the air punch, and finally into the fastening tool 13 through the hose 14. The feeder 12 is existing technology. Without going into too much detail in this application, the locking tool 13 is used to lock the screw head or unlock the screw. Its structure integrates a tool housing, a pneumatic-hydraulic booster cylinder, a floating buffer mechanism, a three-jaw elastic clamp, a permanent magnet adsorption ring, and a conical guide shield. The top of the tool housing has a mounting flange connected to the upper mold 7. The pneumatic-hydraulic booster cylinder is fixed inside the tool housing, and its piston rod extends downwards. The floating buffer mechanism includes a buffer spring and a guide sleeve coaxially sleeved outside the piston rod. The inner wall of the three-jaw elastic clamp has a groove that matches the screw head. A stepped slot is connected to the end of the piston rod of the pneumatic-hydraulic booster cylinder. A permanent magnet adsorption ring is embedded in the bottom of the three-jaw elastic sleeve. A conical guide shroud covers the outside of the sleeve. In the structure of this fastening tool 13, the screw is guided into the sleeve by the swirling flow of the guide shroud. The permanent magnet adsorption ring adsorbs the screw head. The three-jaw elastic sleeve is driven by the pneumatic-hydraulic booster cylinder to close its jaws and fix the screw. Screw contact locking is achieved by the pneumatic-hydraulic booster cylinder driving the jaws of the three-jaw elastic sleeve to open. The fastening tool 13 is prior art and will not be described in detail in this application. In the structure of the screw feeder 2, the vibratory plate, the direct vibrator, the air punch, and the pneumatic-hydraulic booster cylinder are all communicatively connected to the screw feeding control system.

[0025] The stamping control system and the screw feeding control system are both connected to the collaborative control system, which coordinates the timing of the stamping action, screw feeding, and riveting action.

[0026] Reference Figure 2 and Figure 3Furthermore, the forming part 9 of the upper die 7 is provided with a punch 17, and the lower die 5 is provided with a slot 18 at the position corresponding to the forming part 9. The slot 18 penetrates the lower die 5 to facilitate the removal of stamping residue from the lower die 5. The second riveting part 11 of the upper die 7 is provided with a mounting groove 19 that penetrates the bottom of the upper die 7. The upper die 7 is provided with a punch 20 in the mounting groove 19, and a pressure sensor (not shown in the figure) is provided between the punch 20 and the upper die 7. The pressure sensor is communicatively connected to the stamping control system.

[0027] Reference Figure 3 Furthermore, the lower mold 5 is provided with a raw material support assembly, which includes a plurality of first support columns 21 and a plurality of second support columns 22 of the same number. Each first support column 21 corresponds to a second support column 22 to form a symmetrical structure. The first support columns 21 and the second support columns 22 are arranged along the width direction of the lower mold 5, and the plurality of first support columns 21 and the plurality of second support columns 22 are evenly arranged along the length of the upper mold 7. The upper mold 7 is provided with a clearance groove 23 at the position where each first support column 21 and the plurality of second support columns 22 is aligned to allow clearance between the first support columns 21 and the second support columns 22. The opposing surfaces of the first support columns 21 and the second support columns 22 are recessed with clamping grooves 24. The clamping grooves 24 provided on the first support columns 21 and the second support columns 22 are all... The upper mold 7 is configured to pass through the lower mold 5 along its length. The forming part 9, the first riveting part 10, and the second riveting part 11 are all located between the first support column 21 and the second support column 22. This material support assembly supports the square sheet-shaped stamping material and is used to make a heat sink bracket. The size of the clamping groove 24 matches the thickness of the square sheet-shaped material. The square sheet-shaped material passes through the multiple first support columns 21 and second support columns 22, and its two sides are respectively inserted into the clamping groove 24. The side walls of the square sheet-shaped material abut against the first support column 21 and the second support column 22, so that the square sheet-shaped material is positioned and supported. The square sheet-shaped material slides in the clamping groove 24 and passes through the forming part 9, the first riveting part 10, and the second riveting part 11 of the upper mold 7 in sequence.

[0028] Furthermore, the sliding of the square sheet material is conveyed by an external conveying device (not shown in the figure). The external conveying device uses a screw module to drive the gripper. The gripper holds the square sheet material, and the screw module drives the gripper to move.

[0029] Reference Figure 2 and Figure 3 Furthermore, vertical guide posts 25 are provided at the four corners of the upper mold 7, and guide holes 26 matching the size of the guide posts 25 are provided at the four corners of the lower mold 5. Each guide hole 26 is fitted with a guide post 25. The guide rod and the guide hole 26 cooperate to make the upper mold 7 move stably relative to the lower mold 5 and not easily deviate.

[0030] Reference Figure 1 and Figure 4 Furthermore, the mounting base 6 is provided with vertical slide rails 27 on both sides, and the body 3 is provided with sliders 28 corresponding to the two slide rails 27. The slide rails 27 and sliders 28 are slidably connected to make the mounting base 6 move up and down stably.

[0031] Reference Figure 1 and Figure 4 Furthermore, the drive mechanism 8 includes a motor 29, a drive shaft 30, a crankshaft 31, a connecting rod 32, a first belt (not shown in the figure), and a second belt (not shown in the figure). The drive shaft 30 and crankshaft 31 are both horizontally arranged on the top of the body 3, with the drive shaft 30 parallel to the crankshaft 31. The connecting rod 32 is vertically arranged, with its top end hinged to the crankshaft 31 and its bottom end fixedly connected to the mounting base 6. A first flywheel 33 is provided on the crankshaft 31, and a second flywheel 34 and a first pulley 35 are provided on the drive shaft 30. The motor 29 is fixed to the top of the body 3, and the drive shaft 30 of the motor 29 is equipped with... There is a second pulley 36. The first pulley 35 and the first flywheel 33 are connected by a first belt. The second pulley 36 and the second flywheel 34 are connected by a second belt. The second flywheel 34 is driven to rotate by the motor 29, which in turn drives the drive shaft 30 to rotate. The drive shaft 30 drives the second flywheel 34 to rotate. The rotation of the second flywheel 34 drives the crankshaft 31 to rotate. One rotation of the crankshaft 31 drives the connecting rod 32 to perform one up-and-down reciprocating motion. One up-and-down reciprocating motion of the connecting rod 32 drives the mounting seat 6 to perform one up-and-down reciprocating motion. The up-and-down reciprocating motion of the mounting seat 6 realizes the mold closing and opening of the upper mold 7 and the lower mold 5.

[0032] Reference Figure 1 Furthermore, dampers 37 are vertically fixed on both sides of the crankshaft at the top of the body 3. Both dampers 37 are connected to the mounting base 6. The dampers 37 buffer the reciprocating motion of the mounting base 6 and reduce the collision between the upper and lower molds 5.

[0033] The implementation principle of the combined stamping and screw riveting stamping device of this application is as follows: The grippers of the external conveying equipment hold the square sheet material and slide it along the support column group of the lower die 5, pushing the material to the bottom of the forming part 9. The vibratory feeder of the screw feeder 2 is started, arranging the scattered screws to the end of the linear vibration track. The air punch blows the screws into the hose 14, which is then conveyed to the locking tool 13. The drive mechanism 8 drives the mounting base 6 to descend, causing the upper die 7 to press down as a whole. The upper die 7 and the lower die 5 are closed. The punch 17 of the forming part 9 of the upper die 7 punches the material into the shape of the part and punches out the pre-riveting holes on the part. The upper die 7 moves upward, and the grippers of the external conveying equipment hold the square sheet material again, driving the square sheet material to move so that the formed part moves to the first riveting part of the upper die 7. 10. When the stamping starts, the collaborative control system triggers the screw feeding control system. The screw feeding control system controls the pneumatic-hydraulic booster cylinder to push the piston rod downward, causing the jaws of the three-jaw elastic sleeve to close, clamping the screw head that has reached the locking tool 13. The upper die 7 continues to move downward, and the locking tool 13 presses down with the first riveting part 10, initially pressing the screw into the pre-riveting hole of the stamping. After the pre-riveting is completed, the upper die 7 moves upward, and the jaws of the external conveying equipment clamp the square sheet material again, driving the square sheet material to move so that the formed part moves to the second riveting part 11 of the upper die 7. The upper die 7 continues to move downward, and the punch 20 set in the second riveting part 11 of the upper die 7 presses down to perform secondary riveting of the screw. The pressure sensor detects the pressure of the punch 20 in real time, and the data is fed back to the stamping control system. When overpressure occurs, the pressing is immediately stopped, completing the part forming and screw riveting operation. The above process is the process of forming and riveting the first part. Multiple parts are formed from the same square sheet material. After forming three or more parts, during the mold closing process of the upper die 7 and lower die 5, the part forming and the pre-riveting and final riveting of the first two parts are performed simultaneously. This application integrates the two originally separate processes of stamping and screw riveting into one machine to complete them at once, saving the time and labor costs of manual sorting, transportation, and repositioning at the riveting station. It significantly shortens the overall processing cycle of a single part, making the overall production efficiency of parts high, and reducing the need for dedicated riveting equipment, saving factory space and equipment investment costs.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined stamping and screw riveting stamping device, characterized in that, include: The punch press body includes a machine body, a worktable fixed to the lower part of the machine body, a lower die set on the worktable, a mounting base set on the upper part of the machine body and reciprocating up and down relative to the worktable, an upper die fixed to the bottom of the mounting base, a drive mechanism for driving the movement of the mounting base, and a punching control system for controlling the punching action. The upper die is sequentially provided with a forming part for forming the part, a first riveting part for initially riveting the screw, and a second riveting part for riveting the screw a second time. A screw feeding machine includes a feeder fixed to the machine body, a locking tool disposed on the upper die, a hose connecting the output end of the feeder and the input end of the locking tool, and a screw feeding control system for controlling screw feeding and loading / unloading. The feeder is used to output the randomly piled screws one by one, and the locking tool is used to lock the screw head or unlock the screw. The upper die has a receiving cavity for accommodating the locking tool and a through hole for the hose to pass through the receiving cavity in the first riveting part. The collaborative control system is connected to both the stamping control system and the screw feeding control system. The collaborative control system coordinates and controls the timing of the stamping action, screw feeding, and riveting action.

2. The combined stamping and screw riveting stamping device according to claim 1, characterized in that: The drive mechanism includes a motor, a drive shaft, a crankshaft, a connecting rod, a first belt, and a second belt. The drive shaft and the crankshaft are both horizontally arranged on the top of the machine body, and the drive shaft is parallel to the crankshaft. The connecting rod is vertically arranged, and its top end is hinged to the crankshaft. The bottom end of the connecting rod is fixedly connected to the mounting base. A first flywheel is provided on the crankshaft, and a second flywheel and a first pulley are provided on the drive shaft. The motor is fixed to the top of the machine body, and a second pulley is provided on the drive shaft of the motor. The first pulley and the first flywheel are connected by a first belt, and the second pulley and the second flywheel are connected by a second belt.

3. The stamping and screw riveting composite stamping device according to claim 2, characterized in that: The top of the fuselage is vertically fixed with dampers on both sides of the crankshaft, and both dampers are connected to the mounting base.

4. The combined stamping and screw riveting stamping device according to claim 1, characterized in that: The upper mold forming section is equipped with a punch.

5. The stamping and screw riveting composite stamping device according to claim 1, characterized in that: The second riveting part of the upper die is provided with a punch, and a pressure sensor is provided between the punch and the upper die. The pressure sensor is communicatively connected to the stamping control system.

6. The combined stamping and screw riveting stamping device according to claim 1, characterized in that: The lower die is provided with a raw material support assembly, which is used to support the stamping raw material to slide sequentially through the forming part, the first riveting part, and the second riveting part of the upper die.

7. The stamping and screw riveting composite stamping device according to claim 6, characterized in that: The raw material support assembly includes a plurality of first support columns and a plurality of second support columns of equal number. Each first support column corresponds to a second support column to form a symmetrical structure. The first support columns and second support columns are arranged along the width direction of the lower mold, and the plurality of first support columns and second support columns are evenly arranged along the length of the upper mold. The upper mold is provided with a clearance groove at the position of each first support column and the plurality of second support columns to avoid the first support columns and second support columns. The opposing surfaces of the first support columns and second support columns are all recessed with clamping grooves. The clamping grooves provided on the first support columns and second support columns are all provided through the lower mold along the length direction of the lower mold. The forming part, the first riveting part, and the second riveting part provided on the upper mold are all located between the first support columns and the second support columns.

8. The stamping and screw riveting composite stamping device according to claim 1, characterized in that: The upper mold has vertical guide posts at each of its four corners, and the lower mold has guide holes at each of its four corners that match the size of the guide posts. Each guide hole is fitted with a corresponding guide post.

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